#include "inspircd.h"
#include "socket.h"
#include "socketengine.h"
-
-#ifdef USE_TCP_DEFER_ACCEPT
#include <netinet/tcp.h>
-#endif
ListenSocket::ListenSocket(ConfigTag* tag, const irc::sockets::sockaddrs& bind_to)
: bind_tag(tag)
if (this->fd == -1)
return;
+#ifdef IPV6_V6ONLY
+ /* This OS supports IPv6 sockets that can also listen for IPv4
+ * connections. If our address is "*" or empty, enable both v4 and v6 to
+ * allow for simpler configuration on dual-stack hosts. Otherwise, if it
+ * is "::" or an IPv6 address, disable support so that an IPv4 bind will
+ * work on the port (by us or another application).
+ */
+ if (bind_to.sa.sa_family == AF_INET6)
+ {
+ std::string addr = tag->getString("address");
+ /* This must be >= sizeof(DWORD) on Windows */
+ const int enable = (addr.empty() || addr == "*") ? 0 : 1;
+ /* This must be before bind() */
+ setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char *>(&enable), sizeof(enable));
+ // errors ignored intentionally
+ }
+#endif
+
ServerInstance->SE->SetReuse(fd);
int rv = ServerInstance->SE->Bind(this->fd, bind_to);
if (rv >= 0)
int timeout = tag->getInt("defer", 0);
if (timeout && !rv)
{
-#ifdef USE_TCP_DEFER_ACCEPT
+#if defined TCP_DEFER_ACCEPT
setsockopt(fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, sizeof(timeout));
-#elif defined USE_SO_ACCEPTFILTER
+#elif defined SO_ACCEPTFILTER
struct accept_filter_arg afa;
memset(&afa, 0, sizeof(afa));
strcpy(afa.af_name, "dataready");
#endif
}
-#ifdef IPV6_V6ONLY
- /* This OS supports IPv6 sockets that can also listen for IPv4
- * connections. If our address is "*" or empty, enable both v4 and v6 to
- * allow for simpler configuration on dual-stack hosts. Otherwise, if it
- * is "::" or an IPv6 address, disable support so that an IPv4 bind will
- * work on the port (by us or another application).
- */
- if (bind_to.sa.sa_family == AF_INET6)
- {
- std::string addr = tag->getString("address");
- const char enable = (addr.empty() || addr == "*") ? 0 : 1;
- setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable));
- // errors ignored intentionally
- }
-#endif
-
if (rv < 0)
{
int errstore = errno;